Organic Photon Energy Up-conversion Composition
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Solution Overview
Problem
Existing photon energy up-conversion systems, both inorganic and organic, are limited by high manufacturing costs, unsuitability for large-area film formation, and inefficiency at low light intensities and ambient temperatures, with most organic systems requiring high temperatures and having limited versatility in wavelength applications.
Innovation Solution
A composition comprising two organic components, where one acts as a sensitizer and the other as an emitter, capable of absorbing and emitting energy at specific wavelength regions, enabling efficient photon energy up-conversion even at low pump intensities and ambient temperatures, suitable for large-area film formation and versatile applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inorganic systems with sensitising and activator components are used for up-conversion, then up-conversion efficiency is improved, but manufacturing cost increases and suitability for large-area film formation decreases
Solution Approach 1:
The patent replaces expensive inorganic sensitising and activator components with organic compounds that perform the same up-conversion function. The organic compounds are cheaper to manufacture and process, enabling cost-effective production while maintaining up-conversion efficiency. The organic nature allows for solution processing and large-area film formation techniques.
Solution Approach 2:
The patent changes the material phase from inorganic solid-state systems to organic molecular systems. This parameter change enables the use of solution processing methods, spin-coating, and other techniques suitable for large-area film formation on flexible substrates, while preserving the energy transfer mechanism through molecular design.
2Ease of manufacture
If organic compounds are used for up-conversion, then manufacturing cost decreases and film formation capability improves, but up-conversion efficiency at low light intensities and ambient temperatures worsens
Solution Approach 1:
The patent employs an energy transfer mechanism where the organic sensitiser acts as an intermediary that absorbs low-energy photons and transfers energy to the emitter. This two-step process enables efficient up-conversion at low light intensities by utilizing the high absorption cross-section of the sensitiser and the efficient energy transfer to the emitter, which then emits at higher energy wavelengths.
Solution Approach 2:
The patent creates a composite organic system combining sensitiser and emitter compounds in a single material system. This composite approach allows optimization of both light absorption (via sensitiser) and light emission (via emitter), achieving high up-conversion efficiency at ambient conditions through synergistic molecular design and energy transfer coupling.
3Reliability
If inorganic crystalline systems are used, then up-conversion process is well-established, but versatility in wavelength applications and adaptability to different substrates decreases
Solution Approach 1:
The patent designs organic compounds with tunable molecular structures that can be adjusted to absorb and emit at various wavelengths. The organic sensitiser-emitter system can be customized for different wavelength regions (UV, visible, NIR) and is compatible with multiple substrate types including flexible polymers, glass, and metals, providing universal applicability across different opto-electronic devices.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution achieves efficient photon energy up-conversion across a range of wavelengths, enabling the development of versatile opto-electronic devices that can operate effectively at room temperature and low light intensities, with improved performance in large-area film formation.
Implementation Method 1
upon absorption of energy by the first component at the first wavelength region λ1, the emissive component emits energy at the second wavelength region λ2
Implementation Method 2
a first component is capable of absorbing energy at a first wavelength region w≦λ1≦x
Data Source
AI summary
The present invention relates to a composition for photon energy up-conversion, a system comprising said composition and to uses of said composition and said system.